DALL: MOLLUSCA AND BRACHIOPODA. 445 
U.S. S. “ Albatross,” station 2783, off the west coast of Patagonia, Southern 
Chile, in 122 fathoms, mud, bottom temperature 48° F. U.S. N. Mus. 87,547. 
Also at station 3360, Gulf of Panama, in 1672 fathoms, sand, temperature 42° F. 
Macandrevia diamantina Dat. 
Macandrevia diamantina Dall, Proc. U.S. Nat. Mus., 1895, 17, p. 723, pl. 30, fig. 5; 
pl. 32, figs. 3, 6. 
U.S. 8.“ Albatross,” station 3362, Gulf of Panama, in 1175 fathoms, mud; 
bottom temperature 36°.8 F.; also at station 4656, in 2222 fathoms mud, off 
Sechura Point, Peru, temperature 35°.2 F. U.S. N. Mus. 122,860. 
Macandrevia craniella Dat. 
Macandrevia craniella Dall, Proc. U. S. Nat. Mus., 1895, 17, p. 722, pl. 30, fig. 1. 
U.S. S. “ Albatross,”’ station 8362, off Cocos Island, Gulf of Panama, in 1175 
fathoms, mud, bottom temperature 36°.8 F. U.S. N. Mus. 122,858. 
Only one specimen was obtained. It somewhat resembles Waldheimia wyvillit 
Davidson, but is larger, more solid, wants the medial septum in the dorsal valve, 
and differs in other minor details. 
